Asia industries, one of the leading manufacturers and exporters of cold drawn seamless hot rolled offers cold drawn seamless tubes; fuel injection tubes; precision tubes for hydraulic applications; and hydraulic cylinder tubes. Precision small diameter seamless steel tubes are manufactured by cold drawing process from larger size seamless tubes. The tubes are bright annealed in a controlled atmosphere furnace to ensure clean and bright surface, which are free of oxides and dirt. Standards: seamless precision steel tubes are manufactured according to din 2391; din 2391 grade a - precision steel tubes primarily used for mechanical purpose without any specific quality requirements; din 2391 grade b - precision steel tubes satisfying the following requirements-steel grade and surface finish condition. These tubes find numerous applications including: diesel fuel injection tubing; hydraulic lines; automotive; pneumatic lines; and heat exchangers and boilers.